public class Customer {
    private String customerId;
    private String phone;
    private String address;

    public Customer(String customerId, String phone, String address) {
        this.customerId = customerId;
        this.phone = phone;
        this.address = address;
    }

    public String getCustomerId() { return customerId; }
    public String getPhone() { return phone; }
    public String getAddress() { return address; }
}